Voltage Level Detector (CB22135E)

We found this circuit in an English documentation from the 80's. Transistors are general-purpose types.

Tunnel Diode Oscillator (CIR22514E)
This is one of the first circuits published on this component. We found it in the September 1950...
Bistable touch relay (CB9521E)
Found in American documentation from the 90s, this circuit uses a high voltage relay and has no...
Simple MAT Generator (CB14998E)
This circuit generates high voltage pulses, which can reach 30 000 V with the discharge of a...